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rubber wheels here, by the looks of it the carts are at least 10 years old. so no, not polyurethane and not new. anyways, does anyone know how to measure the direction of esd? some sort of

Well, we have used ionizers at work to decrease the risk of ESD, so maybe they would have the opposite effect, Renée?? ? ? ? ? ? Jim Ford? Yahoo Mail: Search, Organize, Conquer On Sat,

I wonder if the companies installed an ion generator to purify the "air" due to the covid stuff? ...just? thought..... Renée

Same here, at the close by Walmart. If I hold the handle so I touch the metal I do not get the shocks. But let a gap form and Whammo! But not always, so cart differences, humidity differences? Frank

Have also added an ebay listing here: https://www.ebay.com/itm/166746089589?var=&widget_ver=artemis&media=COPY It has images of the oscilloscope and a much more detailed description.

I think the problem comes from shopping carts with plastic tires instead of rubber. I had a small spark at a supermarket that had replaced their carts a few weeks earlier. The wheels have bright red

i did think of a chain. or one of those grounding strips you can put on cars. <polara413@...> wrote:

Thanks for the tip Mark I'll let you know how it turns out. Mark

I too have dealt with shocks from the cart at my grocery store. I attributed it to the cart building up charge by rolling. A good test might be to hang a dragging chain from the cart, but I've never

Too many scopes and not enough time. I have a 485 that will not power up. Last time that happened it was the vertical amp IC. Free to a good home for parts or a repair project. Local pickup in

You're welcome, Tom, but I can't claim knowledge here, I just looked it up in the manual. I am pretty good at that. ? Dave Wise ________________________________ Sent: Saturday, May 4, 2024 3:38

Interesting; last week I was at one of the Costcos I visit frequently, and I had the same experience (which has NEVER happened before, and I've been shopping there since the mid 80's).? The charge

I use a 196 regularly and it's my bench standard when doing calibrations on other gear. It the only one that gets a professional cal annually. Rich

I love the knowledge of this group's denizens. Thank you, Dave. -- Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 420 Via Palou Mall Stanford University Stanford, CA

6M11 triode-dual pentode, in V574, V774, and V1605. 6GF5 beam power tube, in V1300 and V1350. Dave Wise ________________________________ Sent: Saturday, May 4, 2024 3:16 PM To: [email protected]

I've done this with a bunch of PNP Ge transistors that had developed internal shorts from tin whiskers. I used a AA battery to drive current thru the whisker and "fuse" it. To do this, you MUST apply

what would make an "accidental" ion generator? <jadney@...> wrote:

The 556 is the only one I've experience of but I can't remember which tube it uses.

My first recommendation was that you try different shoes. I'd still try this, but if this is happening to everyone, I'd suspect the floor tiles. Some materials are more likely to generate